435981398 has 4 divisors (see below), whose sum is σ = 653972100. Its totient is φ = 217990698.

The previous prime is 435981383. The next prime is 435981401. The reversal of 435981398 is 893189534.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893189534 = 2 ⋅446594767.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108995348 + ... + 108995351.

It is an arithmetic number, because the mean of its divisors is an integer number (163493025).

Almost surely, 2^435981398 is an apocalyptic number.

435981398 is a deficient number, since it is larger than the sum of its proper divisors (217990702).

435981398 is a wasteful number, since it uses less digits than its factorization.

435981398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217990701.

The product of its digits is 933120, while the sum is 50.

The square root of 435981398 is about 20880.1675759559. The cubic root of 435981398 is about 758.2678685132.

The spelling of 435981398 in words is "four hundred thirty-five million, nine hundred eighty-one thousand, three hundred ninety-eight".